$D$-Mannose $\overset{HO^{-}}{\longleftrightarrow}$ $D$-Glucose $\overset{HO^{-}}{\longleftrightarrow}$ $(A)$.
Product $(A)$ of the above reaction is:

The reaction of an aldopentose with $4HIO_4$ yields which products?

Assertion: Glucose and fructose give the same osazone.
Reason: During osazone formation,stereochemistry only at $C_1$ and $C_2$ is destroyed.

$\alpha-D-(+)-$Glucose and $\beta-D-(+)-$Glucose are not

Given below are two statements:
Statement $I$: The two cyclic forms of $D-(+)-glucose$ ($\alpha$ and $\beta$ anomers differing at $C1$ hydroxyl orientation) are two anomers of $D-(+)-glucose$.
Statement $II$: The open chain forms of $D-glucose$ and $D-fructose$ contain three similar chiral carbons at $C3$, $C4$, and $C5$.
In the light of the above statements, choose the correct answer from the options given below:

Identify the tetrasaccharide from the following.